Do you know what are the uses of Raspberry Pi? This small but mighty microcomputer has made a huge splash in the tech world, becoming a favorite of makers and hobbyists alike. Whether for education, IoT, or entertainment, the Raspberry Pi demonstrates amazing versatility and flexibility. Let's dig in and see what the Raspberry Pi can do.
Bee's Raspberry Pi:
In 2018, you and your younger brother embarked on a fun project, keeping beehives and using a Raspberry Pi and sensors to monitor the temperature and humidity of the beehives. This small monitoring solution is based on Raspberry Pi 2B, equipped with Raspbian Stretch operating system, and connected with DHT11 temperature and humidity sensor. By placing three or four sensors inside the hive, you can measure the temperature at the hive entrance hole, under the lid, and on the lowest frame. The sensor is directly connected to the Raspberry Pi and uses the Python_DHT sensor library to read the data. In addition, you also built tools such as InfluxDB and Telegraf, and finally used Grafana to realize data visualization.
It is a wise choice to use Raspberry Pi as the central control unit for data acquisition and processing. The Raspberry Pi is a low-cost, flexible and programmable microcomputer suitable for a variety of IoT projects. It provides a wealth of interfaces and GPIO pins for easy connection and control of various sensors and devices. And the DHT11 temperature and humidity sensor you choose is a simple and easy-to-use sensor, which is suitable for beginners and can meet basic monitoring needs.
By setting up InfluxDB and Telegraf, you built a data storage and collection system. InfluxDB is a time-series database ideal for storing and querying time-series data, such as changes in temperature and humidity over time. Telegraf is an open source collection agent that can obtain data from various sources in a plug-in manner and write it into InfluxDB. In this way, you can continuously record and save hive data, providing the basis for subsequent analysis and visualization.
Build a toy with a Raspberry Pi:
When your daughter turns four, she's hoping for a special gift for Christmas—a "Megalodon Music Box." She could clearly picture the music box in her mind. It will be pink and sparkly and have her name on it. When she opens the box, the theme song from the hit movie plays inside. She plans to keep her favorite megalodon and other precious trinkets in the box. However, after searching online and in stores, you can find no off-the-shelf music box that matches her vision.
By using a light sensor, the Raspberry Pi can sense the moment the box is opened. Once the light enters the interior of the music box, the sensor will trigger the corresponding action through the Python script, making the music start to play. This design ensures that the music only plays at the right moment, adding to the magic and surprise effect of the music box.
Of course, in order to make the entire music box more in line with your daughter's aesthetics, you carefully placed the technological equipment at the bottom of the music box and decorated it according to her preferences. Perhaps you added some pink decorations to make the music box more sparkly. By combining technology and art, you have successfully created a unique music box that meets your daughter's requirements, bringing her endless joy and surprises.
This story demonstrates the power of open source technology. As a low-cost, flexible and programmable microcomputer, the Raspberry Pi provides you with the opportunity to create freely. Using an open-source Python script and a light sensor, you were able to make music play automatically at just the right moment. Open source technology empowers people to explore and create, turning dreams into reality.
The above is all the content shared today. If you have not tried the Raspberry Pi, you might as well explore its wonderful world.